Cutelec 10Pairs Battery Springs AA Battery Negative to Positive Conversion Spring Contact Nickle Plated 12x12mm and 12x26.5mm

https://www.amazon.com/10Pairs-Negative-Positive-Conversion-12x26-5mm/dp/B09NBQLDSG/ref=sr_1_1?crid=1KY097JG4UC6A&sprefix=aa+spring+%2Caps%2C140&sr=8-1 Search for AA/AAA spring contact. You'll need to be able to disassemble the case, then solder the wire to the new contact.